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Restructuring (Breisach Restructuring) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Breisach Restructuring [Member]
Mar. 31, 2012
Breisach Restructuring [Member]
employees
Sep. 30, 2012
Breisach Restructuring [Member]
Sep. 30, 2011
Breisach Restructuring [Member]
Mar. 31, 2012
Breisach Restructuring [Member]
Employee Termination Costs [Member]
Sep. 30, 2012
Breisach Restructuring [Member]
Employee Termination Costs [Member]
Sep. 30, 2011
Breisach Restructuring [Member]
Employee Termination Costs [Member]
Mar. 31, 2012
Breisach Restructuring [Member]
Other [Member]
Sep. 30, 2012
Breisach Restructuring [Member]
Other [Member]
Sep. 30, 2011
Breisach Restructuring [Member]
Other [Member]
Restructuring Cost and Reserve [Line Items]                                    
Number of employees eliminated                   25                
Beginning Balance                     $ 220 $ 0   $ 145 $ 0   $ 75 $ 0
Restructuring charge (1,000) (100) (236) 200 100 1,259 154 (468) 224 500 336 224 400 336 148 100 0 76
Foreign currency fluctuation                     (11) (4)   (9) (3)   (2) (1)
Payments                     (505)     (459)     (46)  
Reversals                     (40)     (13)     (27)  
Ending Balance                 $ 220   $ 0 $ 220   $ 0 $ 145   $ 0 $ 75